histone h3k4me3

KDM4-IN-4 (compound 47) is a potent inhibitor of histone lysine demethylase 4 (KDM4), with a binding constant of approximately 80 μM for the KDM4A-Tudor domain. It inhibits H3K4Me3 binding to the Tudor domain in cellular contexts with an EC50 value of 105 μM, holding potential for anticancer research applications [1].

A-366 is a highly selective peptide-competitive histone methyltransferase G9a inhibitor with IC50s of 3.3 and 38 nM for G9a and GLP, respectively.It is more than 1,000-fold selective for G9a and GLP over the other 21 methyltransferases. It is an inhibitor of the Spindlin1-H3K4me3 interaction with an IC50 of 182.6 nM.It exhibits high affinity for human H3R with a Ki value of 17 nM, and shows subtype selectivity between subgroups of the histaminergic and dopaminergic receptor families.

KDM5-C70 is an ethyl ester derivative of KDM5-C49 and functions as an effective, cell-permeable, pan-KDM5 histone demethylase inhibitor. It exhibits an antiproliferative effect in myeloma cells and induces a genome-wide elevation of H3K4me3 levels.

KDM5-IN-1 is an effective and selective inhibitor of KDM5 with an IC50 of 15.1 nM.

Methylstat is a methyl ester prodrug of a Jumonji C domain-containing histone demethylase (JMJD) inhibitor that has favorable cell permeability. The free acid of methylstat inhibits JMJD2A, JMJD2C, JMJD2E, PHF8, and JMJD3 with IC50 values of approximately 4.3, 3.4, 5.9, 10, and 43 μM, respectively, in an in vitro assay. Methylstat inhibits growth of the JMJD2C-sensitive esophageal cancer cell line KYSE150 with a GI50 of 5.1 μM, whereas the free acid of methylstat did not inhibit cell growth up to 100 μM. Methylstat induces histone hypermethylation at multiple sites in a concentration-dependent manner (EC50 for H3K4me3 and H3K9me3 = 10.3 and 8.6 μM in KYSE150 cells and 6.7 ad 6.3 μM in MCF-7 cells, respectively).

MM-102 TFA (HMTase Inhibitor IX TFA) is a potent WDR5 MLL interaction inhibitor with an IC50 of 2.4 nM. This compound prevents the interaction between mixed lineage leukemia 1 (MLL1) and WD Trp-Asp repeat domain 5 (WDR5), inhibiting MLL1 H3K4 histone methyltransferase (HMT) activity and down-regulating H3K4me3, which facilitates the epigenetic reprogramming of porcine somatic cell nuclear transfer embryos.